Objective To explore a new method of nasal tip plasty and its clinical effect,which is much accorded with biomechanical properties of the human body.Methods From June 2010 to March 2016,a total of 33 cases of nasal tip surgery,6 males and 27 females,were performed.Ages ranged from 22 to 46 years in this group.Ear cartilage was trimmed into two strips and sutured them together in a M shape.When located to the original position of the nasal alar cartilage,theM shaped cartilage could be used in nasal tip;when fixing part of it on the nasal septum or lengthened nasal septal cartilage,the M shaped cartilage could be used in cosmetic surgery of nasal tip lengthening.Results The follow-up period was from one month to 60 months,with average 14 months.29 patients (87.9 ％) were satisfied with the efficacy and 2 patients were suffered from infection (6.1 ％).Conclusions When the M-shaped cartilage is fixed with lengthened nasal septum,it can lengthen the nasal tip much more and the contouring and texture of nasal tip are better than that of using a shield or a cap cartilage graft.

It is difficult to measure the circular arc radius for central angle less than 30 degrees. The existing measuring methods are of low efficiency and big error. Through designing the machine vision system and studying the image detecting method for measurement, It is obtained good results by using the new measurement for tracheal intubation's circular arc radius, Realized a rapid and accurate measurement of the circular arc radius, and expanded the application in the field of machine vision.
Humans ; Imaging, Three-Dimensional ; instrumentation ; Intubation ; Trachea

At present, the existing problem in nasal feeding perfusion apparatus is laborious and instability. Designing the rolling type perfusion apparatus by using a roller pump, the problem is solved. Compared with the traditional perfusion apparatus, the advantage lies in liquid carrying only need once and simulating human swallowing process. Through testing and verification, the apparatus can be used in nasal feeding perfusion for elderly or patients.
Aged ; Enteral Nutrition ; instrumentation ; Humans ; Nose ; Surgical Tape

Objective To discuss the coverage of finger soft tissue defect with dorsal proximal digit fasciocutaneous flap on the middle and distal digit.Methods From May,2013 to December,2014,8 cases with soft tissue defects at 8 fingers were treated with dorsal proximal digit fasciocutaneous flap.The flap sizes ranged from 2.5 cm × 2.0 cm to 3.5 cm × 3.0 cm.The donor site were closed straightly.Results Eight flaps of 8 fingers survived.All the wounds at the donor sites healed well.Eight fingers in 8 cases were followed up for 6-12 months.The color,texture and contour of the flaps were satisfied.The two-point discrimination distances were 8-10 mm.Conclusion The skin defect in the middle and distal digit can be satisfied covered with dorsal proximal digit fasciocutaneous flap.This flap is a simple,reliable and safe management for digit defect and can be performed in the primary hospital.To ensure the surviving of the flap,ensure the surviving of the flap,the awareness of the anatomy of the flap should be known well.The limits of its reconstruction of sensation and coverage size exit in its application.

Objective To evaluate the applied value of septal cartilage combined with perpendicular plate of ethmoid bone graft in short nose plasty in Chinese people with insufficient septal cartilage.Methods From February 2015 to March 2017,thirty-five women with short noses underwent septal extension grafting in our institute.We used perpendicular plate of ethmoid bone to enhance the L-strut structure.An L-strut,comprising 0.6 cm segments of the caudal and dorsal cartilaginous septum,was left altered to harvest more cartilages for septal extension.The harvested septal cartilage was grafted on one side of the caudal septum.Then the alar cartilage was fixed at the end of the septal cartilage graft.Nasal lengths and nasolabial angles were measured pre-and postoperatively.Results The average nasal lengthening was (3.37±1.87) mm (P＜0.001).There was no infection,cerebral spinal fluid leakage,hemorrhage and other complications postoperatively.The average follow-up was 10 months (6 months to 2 years).After operation,33 patients were satisfied with the nasal contour,1 patient complained of high tip projection whereas one patient complained of low tip projection,and the dissatisfactions were corrected by revision surgeries.Conclusions Combining the septal cartilage with perpendicular plate of ethmoid bone graft presents an adequate nose lengthening and a decreased nostril show,even in patients with very little septal cartilage.With minimum complications,this novel technique provides promising clinical outcomes and high patient satisfaction.

Objective:To explore the application value of scenario simulation teaching combined with two-way evaluation in standardized training of pediatric nursing.Methods:A total of 34 trainees who received standardized training of pediatric nursing in The First Affiliated Hospital of Air Force Medical University from March 2018 to March 2019 were selected as the control group, and another 42 trainees from April 2019 to July 2020 were selected as the study group. The control group used traditional teaching, and the study group used scenario simulation teaching combined with two-way evaluation. Theoretical examination and scenario simulation exercise examination were used to assess the theoretical knowledge and clinical practice ability of the trainees, and questionnaire survey was used to evaluate the satisfaction of the trainees with the teaching effect. SPSS 22.0 was used for t-test. Results:The scores of theoretical examination[(95.12±6.24) vs. (91.05±5.12)] and scenario simulation exercise examination (nursing practice skill operation ability, ability to combine theory and practice, clinical thinking and judgment ability, emergency handling ability, communication ability, humanistic care and professional learning ability, and work attitude) of the trainees in the study group were higher than those in the control group, and the differences were statistically significant ( P<0.05). The satisfaction evaluation of the trainees in the study group with the teaching effect was higher than that in the control group, and the difference was statistically significant ( P<0.001). Conclusion:Scenario simulation teaching combined with two-way evaluation can improve the theoretical knowledge, clinical practice ability, and teaching satisfaction of pediatric nursing trainees.

Objective:To evaluate the improvement of nasal appearance, symptoms and psychological burden in patients with secondary cleft rhinoplasty by using retrospective research methods, through preoperative and postoperative questionnaires.Methods:Twenty-three cleft lip patients that underwent surgery in our unit since April 2016 were enrolled in this study. The self-designed questionnaire was used to explore the changes of patients before and after the operation. The questionnaire star was utilized to collect the data, and after the data was sorted and summarized, SPSS 20.0 was used for analysis and statistics.Results:The average follow-up time was 28.9 months. The total score of ROE satisfaction before surgery was 46.74 points, while after surgery it reached 63.04 points ( t=4.10, P<0.01); the self-scores of nasal shape were significantly improved after surgery; but there was no significant change in the ventilation function in the VAS scale before and after the operation; the nasal symptoms and psychological status in the SNOT-22 questionnaire, such as, nasal congestion, embarrassment, depression, restlessness and irritability, were significantly improved ( P<0.05). Conclusions:Our semi-autonomous designed questionnaire can be used to effectively evaluate the satisfaction, nasal shape, and symptoms of patients with nasal deformity secondary to cleft lip. Data analysis shows that our secondary cleft lip rhinoplasty for cleft lip and palate can improve patients′ satisfaction after the repair, as well as nose shape and function, at the same time the psychological burden caused by it.

Objective:To reconstruct the three-dimensional (3D) dose distribution in radiotherapy based on the convolutional neural networks (CNN) through multi-perspective scintillation light processing.Methods:First, fluorescence images were captured from three orthogonal perspectives using a complementary metal-oxide-semiconductor (CMOS) imaging sensor. Then, the images were converted into 3D images, which were input to the trained CNN for dose reconstruction. Finally, the reconstructed doses in different fields were evaluated in terms of gamma pass rate, mean-square error (MSE), percentage depth dose (PDD), and cross beam profile (CBP). Additionally, as the CNN model, 3D-Unet was pre-trained on a virtual dataset.Results:With the 50% maximum dose of as the threshold and 3%/3 mm as the standard, the central-plane and stereo-mean gamma pass rates of all field reconstruction distributions were over 90%, with MSEs remained below 1%. Besides, the PDD and CBP curves showed MSEs below 1‰ and below 1%, respectively.Conclusions:The deep learning-based method for 3D dose reconstruction using scintillation light contributes to enhanced verification of instantaneous 3D relative dose based on plastic scintillation detectors.

Objective To cultivate and breed laboratory cats in conventional laboratory animal facilities, collect background data on laboratory cats, and compare them with purchased domestic cats to assess the feasibility of breeding laboratory cats. Methods Indigenous cat breeds were introduced for reproduction and population expansion under conventional laboratory environment, with recording of kitten survival rates and growth curves. Indicators of 20 laboratory cats of F1 generation (half male and half female), including complete blood count, blood biochemistry, organ mass, organ coefficient, heart rate, and blood pressure, were detected and comparisons between sexes were made. Blood pressure values and sensitivity to histamine of these cats were measured using depressor substance detection method in the Pharmacopoeia of the People's Republic of China-Four Parts: 2020, and were compared with the data from 173 concurrently purchased domestic cats. Results Laboratory cats adapted well to the environment of conventional laboratory facilities, with a survival rate of 77.08% of kittens at 8 weeks of age. Red blood cell count, hemoglobin content, mean corpuscular hemoglobin concentration, and hematocrit in male laboratory cats were significantly higher than those in females (P<0.01), while the mean corpuscular volume in males was significantly lower than that in females (P<0.01). The levels of serum alanine aminotransferase, total bilirubin, creatinine, triacylglycerol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol in male laboratory cats were significantly higher than those in females (P<0.05 or P<0.01), while cholesterol, globulin, total protein, and the albumin-globulin ratio were significantly lower in males (P<0.01). The liver coefficient in male laboratory cats was significantly lower than that in female cats (P<0.05), while the kidney coefficient was significantly higher (P<0.05). The spleen-brain and kidney-brain ratios were significantly higher in males compared to females(P<0.05 or P<0.01). No significant differences were found in heart rate, systolic pressure, diastolic pressure, mean blood pressure, or sensitivity to histamine between male and female laboratory cats (P>0.05). Compared to laboratory cats, purchased domestic cats had significantly higher heart rate, systolic pressure, and mean blood pressure (P<0.01), and the magnitude of blood pressure changes induced by medium and high doses of histamine was significantly reduced (P<0.05 or P<0.01). Conclusion It is feasible to breed laboratory cats in conventional laboratory animal facilities. The accuracy of experimental results can be improved by using laboratory cats with clear and standardized background data.

Adipocytes ; Adipose Tissue ; Exosomes ; Stem Cells ; Wound Healing